Answer:
Step-by-step explanation:
We have been given that a polynomial function 
models the motion of a roller coaster. Every root of the polynomial represent when the roller coaster is at the ground level.
In order to find all the potential values of x when roller coaster is at the ground level, we find the zeroes of the polynomial by factoring it as shown below:
The zeroes of this polynomial occur when either or 
.
The equation have no real solutions. Therefore, the only time when the roller coaster is at the ground is at
115 x .23= 26.45
She spent 26.45$ on the shirt
<span>3/5 of 215
Whenever you see the word "of" in a word problem, automatically think "multiplication".
3/5 </span>× 215
0.6 × 215
129
So, 3/5 of 215 is 129.
Five eighths times seven elevenths =
5/8 x 7/11 =
35/88
30/100 ÷ 10 = 3/10
Hope it helped!
